Application of titanium dioxide in masterbatch

Plastic color masterbatch is a highly concentrated, high-efficiency color configuration. That is, the pigment is evenly distributed in the carrier resin at an extraordinary concentration and forms particles of a certain particle size. It is mainly composed of the core layer (pigment), coupling layer (coupling agent or surfactant), dispersion layer (lubricant or dispersant), mixing layer (carrier resin), etc., used as a dye in plastics, widely used Suitable for the production of blown film, injection molding, hot pressing, injection molding and other plastic products.

Masterbatch has excellent coloring effect, is easy to use, saves energy, and is free of dust and sewage when used. Therefore, it is favored by users. The development speed of masterbatch is very fast. In addition, the production process of color masterbatch is simple and the investment is low. At present, the domestic color masterbatch There are hundreds of masterbatch factories, with varying production scales and technical levels. The annual output of small ones is tens of tons, and the large ones are tens of thousands of tons. Product competition is becoming increasingly fierce, and the profits of manufacturing enterprises are on a downward trend. The quality of most masterbatch products Low According to incomplete statistics, titanium dioxide used in masterbatch production is 20,000 to 30,000 tons per year.

The rutile used is divided into three grades: high, medium and low. High-end is used Imported rutile, mid-range products use domestic rutile, and low-end products use domestic anatase titanium dioxide. Huizhou Taiyangshen Chemical, China’s largest masterbatch production company, uses imported titanium dioxide to produce masterbatch mainly for export, usingdomestic titanium White powderThe masterbatch produced satisfies the domestic market. Due to fierce competition, the use of anatase titanium dioxide masterbatch has an increasing trend

Color masterbatch can be used to color match polyvinyl chloride, polyethylene, polypropylene, polystyrene andABS plastics. Its main components are pigments, resins, dispersants, volume pigments, fluorescent Whitening agent, antioxidant, anti-UV agent, antistatic agent, toughening agent, brightener, etc. Titanium dioxide is used as a white pigment among them. It has the advantages of non-toxic, stable chemical properties, high hiding power, and good dispersion. There are several masterbatch production processes. Typical ones are: pigments, resins, dispersants, volume pigments, and other additives. High-speed mixers, twin-screw extruders, and extrusion masterbatch. Masterbatch is used as an industrial raw material, and its performance is usually determined by It is manifested in subsequent product applications (such as film blowing or injection molding). Therefore, the performance of titanium dioxide in color masterbatch is also mainly reflected in the following aspects during the application process of color masterbatch:

1)Titanium dioxide Coloring ability: determine the amount of titanium dioxide used for the color of the same plastic product;

2)Titanium dioxideWhiteness: determines the appearance of light-colored (white) plastic products with the same titanium dioxide content; p>

3)Titanium dioxideThe dispersion: affects the production cost of colored mesh particles and the appearance, gloss and other indicators of plastic products;

4) Processing properties of titanium dioxide: affecting the production cost of masterbatch